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RUNNING & SPORTS PODIATRY
Achilles Pain When Running: Why Rest Alone Won’t Fix It (and What Will)
Achilles tendinopathy can be frustrating for runners, but rest alone isn’t always the answer. Learn how progressive loading, smart training and expert podiatry care can help you get back to running.
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It usually starts as a whisper. A stiff, creaky achilles for the first few steps out of bed, easing once you get moving. Then the whisper gets louder: an ache that hangs around after long runs, a tendon that feels thick and tender when you pinch it, and, right when the Sunshine Coast Marathon is only a couple of weeks away, a genuine worry that every training run is making things worse. If that sounds familiar, you are in very common company, and the worst thing you can do is the thing most runners try first: stop everything and hope.
At PEAK, we call all our patients Athletes, not because of fitness level but because of mindset: our job is to help you reach your goal, whatever that is.
What's Actually Going On
The achilles is the biggest, strongest tendon in your body, connecting your calf muscles to your heel bone and storing and releasing energy like a spring with every stride. When running, it handles forces of several times your body weight, thousands of times per session. Achilles tendinopathy is what happens when the load you ask of that spring outpaces its capacity to adapt.
Notice the word: tendinopathy, not tendinitis. Research over the past two decades has shown this is not primarily an inflammatory problem, it is a load and capacity problem. Under the microscope, an irritated achilles shows disorganised collagen and changes in the tendon cells rather than the classic signs of inflammation. That distinction matters enormously for treatment, because it explains why anti-inflammatories and rest alone so often fail.
Rest Alone Isn't Enough
A rested tendon is not a stronger tendon. In fact, tendons lose load tolerance when they are unloaded, which is why the pain so often returns the moment you resume running.
The numbers back up how common this is. In a long-term study of former elite male athletes, Kujala and colleagues found that around half of the distance runners had experienced achilles tendon problems in their lifetime, compared with roughly six percent of non-active controls. You do not need to be elite to qualify. Recreational runners in a marathon build are prime candidates, especially in the final heavy weeks.
Location matters too. Mid-portion tendinopathy sits two to six centimetres above the heel bone and is the most common type. Insertional tendinopathy sits right where the tendon attaches to the heel. They look similar but are managed differently: aggressive calf stretching and dropping the heel off a step can actually aggravate an insertional problem, which is one reason a proper assessment beats a generic exercise sheet from the internet.
What Causes It
In the runners we assess at PEAK, the story behind an angry achilles usually includes several of these:
- Training load spikes. The single biggest culprit. A sudden jump in weekly kilometres, a new hill or speed session, or cramming missed sessions into the final weeks before a race. The tendon adapts to gradual change and protests against sudden change.
- Calf weakness and fatigue. The calf is the achilles’ shock absorber. When single-leg calf strength or endurance is poor, more strain lands on the tendon itself, and the gap between your left and right side often tells us which achilles was going to complain first.
- Footwear changes. Suddenly switching to a lower-drop or more minimal shoe increases achilles load. New race shoes debuted too close to race day are a classic trigger.
- Age and tendon changes. Tendinopathy is most common between 30 and 50, when tendons recover more slowly but training ambitions often do not.
- Biomechanics and foot posture. Reduced ankle range, a flatter or stiffer foot, and hip or calf control issues can all concentrate load in the tendon. This is where podiatric assessment earns its keep.
An Inside View: A Podiatrist's Take
Walter Soodjaithum, podiatrist at PEAK with a special interest in heel pain and sports podiatry, sees the same pattern every winter racing season.
“The most common conversation I have is with a runner who rested for three weeks, felt great, ran once and was straight back to square one,” Walter says. “That cycle is so demoralising, and it is completely predictable. Rest settles the symptoms but does nothing for the tendon’s capacity. The runners who get better are the ones who keep the tendon working at the right dose, strengthen the calf properly, and progress back into running by plan rather than by feel. The achilles rewards patience and consistency more than any structure I treat.”
— Walter Soodjaithum, Podiatrist, PEAK
Our Approach: Pain, Prevention, Performance
Achilles care at PEAK follows our Pain, Prevention, Performance framework. First, the pain. We confirm what we are dealing with, mid-portion or insertional, tendon or one of its neighbours, and calm the symptoms with load modification rather than total rest. Often you can keep running with a modified program. Research by Silbernagel and colleagues showed that runners who continued training within a pain-monitoring framework, keeping discomfort mild and settling by the next morning, recovered just as well as those who stopped. Heel lifts, footwear tweaks and hands-on treatment for the calf all help take the edge off early.
Then prevention, which for the achilles means one thing above all: progressive loading. This approach has one of the strongest evidence bases in sports medicine, going back to Alfredson’s landmark heavy-load calf training study, in which recreational athletes with long-standing achilles pain, most of them heading for surgery, returned to full running after twelve weeks of structured loading. Modern programs have refined the details, building from isometric holds through heavy slow calf raises to spring-like loading, but the principle is unchanged: the tendon gets better by being progressively asked to do more, not less. Where appropriate we add shockwave therapy, address footwear, and use custom foot orthotics when foot mechanics are part of the problem.
Finally, performance. A settled achilles is not the finish line. We rebuild single-leg calf strength to meet your sport’s demands, restore your running load step by step, and use tools like running assessment and the Stride Club to make sure the tendon that let you down becomes one of the strongest links in your chain.
Managing It Before Your Appointment
If your achilles is grumbling mid-training block, start here:
Do not stop everything. Trim the aggravators first: hills, speedwork and big jumps in distance. Keep easy running if pain stays mild, no worse than about a three out of ten, and settles by the next morning.
Start gentle calf loading. Slow, controlled calf raises on both legs, progressing to single leg as comfort allows, done every second day. If the pain is right at the heel bone, keep the movement to floor level rather than dropping off a step.
Add a small heel lift. A simple heel raise in both shoes for a few weeks can reduce tendon strain while things settle, especially for insertional pain.
Avoid sudden footwear experiments. Race week is not the time to trial a new shoe with a dramatically different heel drop.
Watch the morning stiffness. First-step stiffness that is trending worse week to week is your most honest progress marker, and a sign to get assessed rather than push on.
How PEAK Can Help
You can book directly with our podiatry and physiotherapy team, no GP referral required. We will assess your tendon, your calf strength, your foot mechanics and your training history, then build a plan that respects your race calendar instead of ignoring it. If the Sunshine Coast Marathon is circled on your calendar, there is still time to make smart decisions rather than desperate ones.
An achy achilles does not have to mean a season on the sidelines. With the right plan, most runners are back doing what they love, often stronger than before. Book an assessment with our team and let’s get that spring back in your stride, so you can keep experiencing things you never felt possible.
Sources referenced: Kujala et al., Clinical Journal of Sport Medicine 2005 (cumulative incidence of achilles tendon disorders in former elite male athletes versus controls); Alfredson et al., American Journal of Sports Medicine 1998 (heavy-load eccentric calf training for chronic achilles tendinosis); Silbernagel et al., American Journal of Sports Medicine 2007 (continued sports activity using a pain-monitoring model during achilles tendinopathy rehabilitation).
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